A) \[y=0.2\sin \left[ 2\pi \left( 6t+\frac{x}{60} \right) \right]\]
B) \[y=0.2\sin \left[ \pi \left( 6t+\frac{x}{60} \right) \right]\]
C) \[y=0.2\sin \left[ 2\pi \left( 6t-\frac{x}{60} \right) \right]\]
D) \[y=0.2\sin \left[ \pi \left( 6t-\frac{x}{60} \right) \right]\]
Correct Answer: C
Solution :
A wave travelling in positive\[x-\]direction may be represented as \[y=A\sin \frac{2\pi }{\lambda }(vt-x).\] On putting values \[y=0.2\sin \frac{2\pi }{60}(360t-x)\] \[\Rightarrow \]\[y=0.2\sin 2\pi \left( 6t-\frac{x}{60} \right)\]
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